<template>
  <div class="list" ref="wrapper">
    <div>
      <div class="area">
        <div class="title border-topbottom">当前城市</div>
        <div class="button-list">
          <div class="button-wraper">
            <div class="button">{{this.city}}</div>
          </div>
        </div>
      </div>
      <div class="area">
        <div class="title border-topbottom">热门城市</div>
        <div class="button-list">
          <div class="button-wraper" v-for="item of hotCities" :key="item.id" @click="handleCityClick(item.name)">
            <div class="button">{{item.name}}</div>
          </div>
        </div>
      </div>
      <div class="area" v-for="(items, key) of cities" :key="key" :ref="key">
        <div class="title border-topbottom">{{key}}</div>
        <div class="item-list">
          <div class="item border-bottom" v-for="item of items" :key="item.id" @click="handleCityClick(item.name)">
            {{item.name}}
          </div>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
  import Bscroll from 'better-scroll'
  import {mapState, mapMutations} from 'vuex'

  export default {
    name: "CityList",
    props: {
      cities: Object,
      hotCities: Array,
      nowCity: String,
      letter: String
    },
    computed: {
      ...mapState(['city'])
    },
    mounted() {
      this.scroll = new Bscroll(this.$refs.wrapper,{
        click: true
      })
    },
    watch: {
      letter() {
        if (this.letter) {
          const element = this.$refs[this.letter][0]
          this.scroll.scrollToElement(element)
        }
      }
    },
    methods: {
      handleCityClick(city) {
        console.log(city)
        this.changeCity(city)
        this.$router.push("/")
      },
      ...mapMutations(['changeCity'])
    }
  }
</script>

<style lang="stylus" scoped>
  @import '~styles/varibles.styl'
  .border-topbottom
    &:before
      border-color #ccc

    &:after
      border-color #ccc

  .border-bottom
    &:before
      border-color #ccc

  .list
    overflow hidden
    position absolute
    top 1.58rem
    left 0
    right 0
    bottom 0

    .title
      line-height .54rem
      background #eee
      padding-left .2rem
      color #666
      font-size .26rem

    .button-list
      overflow hidden
      padding .1rem .6rem .1rem .1rem

      .button-wraper
        width: 33.33%
        float left

        .button
          margin .1rem
          padding .1rem 0
          border-radius .06rem
          text-align center
          border .02rem solid #ccc

    .item-list
      .item
        line-height .76rem
        padding-left .2rem

</style>
